Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,268	$ 605
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized shares	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized shares	200,000,000	200,000,000
Common stock, issued shares	91,178,108	88,521,511
Common stock, outstanding shares	91,178,108	88,521,511
Accounts receivable from joint venture	$ 3,039	$ 0